My thought is perl needs a new site/group dedicated solely to promoting perl to new programmers and users of other languages.
Sure, blogging about and creating sites about Perl might increase its visibility a little. But my personal feeling is that this is a battle that needs to be won at the grass roots of each local community where there exists a handful of Perl enthusiasts. Start a Perl Mongers group (or join a nearby one). Come up with compelling presentations; some should target the pros, and others should target newcomers. Get everyone you can involved -- developers, students, hobbyists, sysadmins, peripherally related individuals, anyone who will attend. Hold regular meetings. Encourage attendees to present on any topic that they find interesting, that can somehow be related back to Perl. Encourage attendees to bring a friend.
Also look outwardly. Plack exists because Miyagawa wasn't afraid to learn from outside of the Perl community. But Plack arguably brings a modern relevancy back to Perl with respect to the domain that it addresses. So find ways to learn what makes other languages relevant, and bring that to Perl. Find things that make Perl relevant, and teach users of other languages. This open minded sharing benefits everyone, and keeps Perl fresh.